<template>
    <el-container>
        <el-aside width="200px" v-loading="showGrouploading">
            <el-container>
                <el-header>
                    <el-input placeholder="输入关键字进行过滤" v-model="groupFilterText" clearable></el-input>
                </el-header>
                <el-main class="nopadding">
                    <el-tree ref="group" class="menu" node-key="id" :data="group" :current-node-key="''"
                             :highlight-current="true" :props="groupProps" :expand-on-click-node="false"
                             default-expand-all
                             :filter-node-method="groupFilterNode" @node-click="groupClick"></el-tree>
                </el-main>
            </el-container>
        </el-aside>
        <el-container>
          <el-header>
            <div class="left-panel">
              <el-button type="primary" plain icon="el-icon-refresh" @click="tableRefresh"></el-button>
              <el-button type="primary" icon="el-icon-plus" v-auth="apiPermission.add" @click="add"></el-button>
              <el-button type="danger" plain icon="el-icon-delete" v-auth="apiPermission.delete" :disabled="selection.length==0"
                         @click="batch_del"></el-button>
            </div>
            <div class="right-panel">
              <div class="right-panel-search">
                <el-input v-model="search.keyWord" placeholder="关键词" clearable></el-input>
                <el-button type="primary" icon="el-icon-search" @click="upsearch"></el-button>
              </div>
            </div>
          </el-header>
          <el-main class="nopadding">
            <scTable ref="table" :apiObj="apiObj" row-key="id" @selection-change="selectionChange"
                     :column="tableColumn">
              <el-table-column type="selection" width="50"></el-table-column>
              <el-table-column label="操作" fixed="right" align="center" width="210">
                <template #default="scope">
                  <el-button type="text" size="small" @click="table_show(scope.row, scope.$index)">查看</el-button>
                  <template v-if="isPermissionShow(apiPermission.update)">
                    <el-divider direction="vertical"></el-divider>
                    <el-button type="text" size="small" @click="table_edit(scope.row, scope.$index)">编辑</el-button>
                  </template>
                  <template v-if="isPermissionShow(apiPermission.delete)">
                    <el-divider direction="vertical"></el-divider>
                    <el-popconfirm title="确定删除吗？" @confirm="table_del(scope.row, scope.$index)">
                      <template #reference>
                        <el-button type="text" size="small">删除</el-button>
                      </template>
                    </el-popconfirm>
                  </template>
                </template>
              </el-table-column>

            </scTable>
          </el-main>
        </el-container>
    </el-container>
  <save-dialog v-if="dialog.save" ref="saveDialog" @success="handleSaveSuccess" @closed="dialog.save=false"></save-dialog>
</template>

<script>
import saveDialog from './save.vue'
import api from '@/api/index.js'
import { permission } from '@/utils/permission'
import tool from "@/utils/tool.js";

export default {
  name: 'dict',
  components: {
    saveDialog
  },
  data() {
    return {
      dialog: {
        save: false,
        permission: false
      },
        showGrouploading: false,
      apiObj: api.cms.article,
      apiPermission: api.cms.article.permission,
      selection: [],
      search: {
          keyWord: null
      },
        tableColumn:[
            {
                prop: "cat_name",
                label: "分类",
                align: "center",
                width: 250
            },
            {
                prop: "alias",
                label: "别名",
                align: "center",
                width: 150
            },
            {
                prop: "title",
                label: "标题",
                align: "center",
                width: 250
            },
            {
                prop: "view",
                label: "浏览量",
                align: "center",
                width: 80,
                formatter: (row, column, cellValue) => {
                    return cellValue || 0
                }
            },
        ],
        groupFilterText: '',
        group: [],
        groupProps: {
            label: 'cat_name',
            children: 'children',
            id: 'id',
            name: 'name'
        }
    }
  },
    watch: {
        groupFilterText(val) {
            this.$refs.group.filter(val);
        }
    },
    mounted() {
        this.getGroup()
    },
    methods: {
    isPermissionShow(val){
      return permission(val)
    },
    //添加
    add(){
      this.dialog.save = true
      this.$nextTick(() => {
        this.$refs.saveDialog.open()
      })
    },
    tableRefresh(){
      this.$refs.table.refresh()
    },
    //编辑
    table_edit(row){
      this.dialog.save = true
      this.$nextTick(() => {
        this.$refs.saveDialog.open('edit').setData(row)
      })
    },
    //查看
    table_show(row){
      this.dialog.save = true
      this.$nextTick(() => {
        this.$refs.saveDialog.open('show').setData(row)
      })
    },
    //删除
    async table_del(row){
      var reqData = {ids: [row.id]}
      var res = await this.apiObj.delete(reqData);
      if(res.code === 0){
        this.$refs.table.refresh()
        this.$message.success("删除成功")
      }else{
        this.$alert(res.message, "提示", {type: 'error'})
      }
    },
    //批量删除
    async batch_del(){
      this.$confirm(`确定删除选中的 ${this.selection.length} 项吗？如果删除项中含有子集将会被一并删除`, '提示', {
        type: 'warning'
      }).then(() => {
        const loading = this.$loading();
        var reqData = {ids: this.selection.map(item => item.id)}
        this.apiObj.delete(reqData).then(res => {
          loading.close();
          if(res.code === 0){
            this.$refs.table.refresh()
            this.$message.success("删除成功")
          }else{
            this.$alert(res.message, "提示", {type: 'error'})
          }
        }).catch(err => {
          loading.close();
          this.$alert(err.message, "提示", {type: 'error'})
        })
      }).catch(() => {

      })
    },
    //表格选择后回调事件
    selectionChange(selection){
      this.selection = selection;
    },
    //搜索
    upsearch(){
        this.$refs.table.upData(this.search)
    },
    //根据ID获取树结构
    filterTree(id){
      var target = null;
      function filter(tree){
        tree.forEach(item => {
          if(item.id == id){
            target = item
          }
          if(item.children){
            filter(item.children)
          }
        })
      }
      filter(this.$refs.table.tableData)
      return target
    },
    //本地更新数据
    handleSaveSuccess(data, mode){
      if(mode=='add'){
        this.$refs.table.refresh()
      }else if(mode=='edit'){
        this.$refs.table.refresh()
      }
    },
      //加载树数据
      async getGroup(){
          this.showGrouploading = true;
          var res = await api.cms.articleCategory.list();
          this.showGrouploading = false;
          var allNode ={id: 0, cat_name: '不限'}
          res.data.unshift(allNode);
          this.group = tool.deepTree(res.data,'parent_id')
      },
      //树过滤
      groupFilterNode(value, data){
          if (!value) return true;
          return data.cat_name.indexOf(value) !== -1;
      },
        getTreeChild(node, arr = []){
            if (node.childNodes.length < 1){
                return arr
            }
            else {
                node.childNodes.forEach(item => {
                    arr.push(item.data.id)
                    this.getTreeChild(item,arr)
                })
                return arr
            }
        },
      //树点击事件
      groupClick(data){
          var params = {

          }
          if (data.id > 0) {
              let tmp = this.$refs.group.getNode(data.id)
              let cids = [data.id]
              cids = cids.concat(this.getTreeChild(tmp))
              params.categoryIds = cids
          }
          this.$refs.table.reload(params);
      },
  }
}
</script>

<style>
</style>
